Cooking Appliance Airflow Guide for Heating Element Cooling
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Solution Overview
Problem
Existing cooking appliances face malfunctions and damage due to inefficient cooling of electric elements, leading to overheating.
Innovation Solution
A cooking appliance design featuring a heat sink with multiple heating fins, a cooling fan, and a flow guide that directs cooling air to efficiently cool electric heating elements, including a bottom plate separating air flows to ensure targeted cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a cooling fan is provided to cool the heating element, then the heating element temperature is reduced, but the cooling air flow distribution is inefficient and some areas remain overheated
Solution Approach 1:
The cooling fan is divided into multiple independent fan units (first cooling fan and second cooling fan) positioned at different locations. Each fan unit independently cools specific heating elements, creating a segmented cooling system that improves air flow distribution without requiring complex centralized control mechanisms.
Solution Approach 2:
Guide plates are introduced as intermediary structures between the cooling fans and heating elements. These guide plates direct and channel the cooling air flow from each fan unit to specific heating elements, ensuring efficient heat dissipation while maintaining a relatively simple overall structure.
2Reliability
If multiple cooling fans are added to improve cooling efficiency, then the cooling performance increases, but the device structure becomes more complex
Solution Approach 1:
The cooling system is segmented into multiple independent fan units, each responsible for cooling specific heating elements. This segmentation allows for improved cooling efficiency through better air flow distribution while keeping each fan unit simple and modular, thus not significantly increasing overall device complexity.
Solution Approach 2:
Each cooling fan unit serves multiple functions: it cools multiple heating elements simultaneously, and the guide plates direct air flow to multiple targets. This multi-functionality increases cooling efficiency without requiring a proportional increase in the number of components.
3Loss of energy
If cooling air is blown directly to heating elements, then heat dissipation is improved, but air flow distribution becomes uneven and some areas remain overheated
Solution Approach 1:
Guide plates are used as intermediary structures to direct and distribute cooling air flow from each fan unit to multiple heating elements. These guide plates ensure uniform air flow distribution across all heating elements, preventing overheating in specific areas while maintaining high heat dissipation efficiency.
Solution Approach 2:
Each fan unit is positioned to provide localized cooling to specific heating elements, with guide plates ensuring that the cooling air flow is evenly distributed to the intended targets. This local quality approach improves both heat dissipation efficiency and air flow distribution uniformity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively prevents overheating of electric heating elements, thereby preventing malfunctions and extending the lifespan of the appliance.
Implementation Method 1
a heat sink (53) coupled to the heating element (25), to radiate heat
Implementation Method 2
a cooling fan (51) provided at one side of the heat sink (53), to blow cooling air to the heat sink (53)
Implementation Method 3
the heat sink comprises a plurality of heating fins
Implementation Method 4
a heat sink (53) coupled to the heating element (25), to radiate heat
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A cooking appliance is provided. The cooking appliance includes at least one heating element, a heat sink, a cooling fan, and a flow guide. The heat sink is connected to the heating element, to radiate heat. The cooling fan is provided at one side of the heat sink, to blow cooling air to the heat sink. The flow guide covers at least a portion of the heat sink and guides a portion of the cooling air to flow to the heating element.